The allele that causes sickle-cell anemia is the result of . a) an insertion leading to a frameshift mutation that changed all downstream codons b) a single base substitution causing a transversion mutation c) two chromosomal translocations followed by fusions d) a silent mutation, which is why it goes unnoticed until adulthood

Sickle-cell anemoa is caused by a mutation in the gane encoding hemoglobin, causing red blood cells to appear half-moon shaped? I don't know, maybe that. I just tiny

Explanation:

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.